Effect of LaB6 addition on mechanical properties and irradiation resistance of 316L stainless steels processed by selective laser melting

被引：0

作者：

Xu D. ^{[1
]}

Chen F. ^{[1
,3
]}

Tang X. ^{[1
,2
]}

Shen L. ^{[4
]}

Jiang J. ^{[4
]}

Sun Z. ^{[1
]}

Li S. ^{[1
]}

Geng Z. ^{[1
]}

机构：

[1] Department of Nuclear Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing

[2] Key Laboratory of Nuclear Technology Application and Radiation Protection in Astronautics, Nanjing University of Aeronautics and Astronautics, Ministry of Industry and Information Technology, Nanjing

[3] Jiangsu Engineering Laboratory of Nuclear Energy Equipment Materials, Nanjing

[4] College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Yu Dao Street, Nanjing

来源：

International Journal of Advanced Nuclear Reactor Design and Technology | 2021年 / 3卷

关键词：

Ion irradiation; Irradiation resistance; LaB[!sub]6[!/sub] reinforced 316L SS; Mechanical properties; Selective laser melting;

D O I：

10.1016/j.jandt.2021.06.004

中图分类号：

学科分类号：

摘要：

The 316L stainless steels (SS) have become one of the most common structural materials in nuclear system applications due to their excellent physicochemical performance. Selective laser melting (SLM) preparation, mechanical properties, and irradiation resistance of 316L SS reinforced by second-phase particles have aroused extensive attention. Here, the mechanical properties of 316L SS with different LaB6 contents processed by SLM before irradiation and the irradiation-induced swelling after 50 keV He+ irradiation at room temperature were investigated. Results showed that the microstructure was refined with the LaB6 addition, and the size of 316L SS subgrains decreased with the increase of LaB6. LaB6 reinforced 316L SS (316L-LaB6) exhibited higher hardness and yield strength compared with 316L SS without LaB6 addition. After 50 keV He+ irradiation, the irradiation-induced swelling rate of 316L-LaB6 was lower than that of 316L SS without LaB6 addition, indicating that LaB6 improved the irradiation resistance of 316L SS. Consequently, our study indicated the potential of using 316L-LaB6 as irradiation-resistant material. © 2021 Xi'an Jiaotong University

引用

页码：74 / 79

页数：5

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